Thanks, Flipflopman.
RR were certainly very good at the propaganda, and I have to say it generally made the ex-BSEL guys sick.
From '66 to '69, the only engine about which you ever saw a press release was the "wonderful" RB211. When that started to go belly-up, with the hyfil fan disaster and the performance problems, they suddenly found they could divert attention by talking about THEIR 593.
Happy days, but it all seems a long time ago now.
Regards, Sooty